INA129-EP 查询"INA129-EP"供应商 www.ti.com SBOS508 – DECEMBER 2009 PRECISION, LOW POWER INSTRUMENTATION AMPLIFIERS Check for Samples: INA129-EP FEATURES • • • • • • Low Offset Voltage Low Input Bias Current High CMR Inputs Protected to ±40 V Wide Supply Range: ±2.25 V to ±18 V Low Quiescent Current APPLICATIONS • • • • • Bridge Amplifier Thermocouple Amplifier RTD Sensor Amplifier Medical Instrumentation Data Acquisition SUPPORTS DEFENSE, AEROSPACE AND MEDICAL APPLICATIONS • • • • • • • Controlled Baseline One Assembly/Test Site One Fabrication Site Available in Military (–55°C/125°C) Temperature Range (1) Extended Product Life Cycle Extended Product-Change Notification Product Traceability D PACKAGE (TOP VIEW) (1) RG RG V- IN V+ V+IN VO V- Ref Custom temperature ranges available DESCRIPTION The INA129 is a low power, general purpose instrumentation amplifier offering excellent accuracy The versatile 3-op amp design and small size make it ideal for a wide range of applications Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100) A single external resistor sets any gain from to 10,000 The INA129 provides an industry-standard gain equation; the INA129 gain equation is compatible with the AD620 The INA129 is laser trimmed for very low offset voltage, drift and high common-mode rejection (113 dB at G ≥ 100) It operates with power supplies as low as ±2.25 V, and quiescent current is only 750 μA - ideal for battery operated systems Internal input protection can withstand up to ±40 V without damage The INA129 is available in an SO-8 surface-mount package specified for the –55°C to 125°C temperature range Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet PRODUCTION DATA information is current as of publication date Products conform to specifications per the terms of the Texas Instruments standard warranty Production processing does not necessarily include testing of all parameters Copyright © 2009, Texas Instruments Incorporated INA129-EP SBOS508 – DECEMBER 2009 www.ti.com 查询"INA129-EP"供应商 This integrated circuit can be damaged by ESD Texas Instruments recommends that all integrated circuits be handled with appropriate precautions Failure to observe proper handling and installation procedures can cause damage ESD damage can range from subtle performance degradation to complete device failure Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications V+ G=1+ INA129 VIN 49.4 kW RG Over-Voltage Protection A1 40 kW VIN A3 RG + 40 kW 24.7 kW VO 24.7 kW A2 Over-Voltage Protection 40 kW Ref 40 kW V- ORDERING INFORMATION (1) (1) (2) TA PACKAGE (2) ORDERABLE PART NUMBER TOP-SIDE MARKING –55°C to 125°C SOIC-D INA129MDREP 129EP For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) VS VALUE UNIT Supply voltage ±18 V Analog input voltage range ±40 Output short-circuit (to ground) V Continuous TA Operating temperature –55 to 125 °C TSTG Storage temperature range –55 to 125 °C TJ Junction temperature 150 °C Lead temperature (soldering, 10s) 300 °C (1) Stresses above these ratings may cause permanent damage Exposure to absolute maximum conditions for extended periods may degrade device reliability These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP www.ti.com SBOS508 – DECEMBER 2009 查询"INA129-EP"供应商 ELECTRICAL CHARACTERISTICS At TA = 25°C, VS = ±15 V, RL = 10 kΩ (unless otherwise noted) Boldface limits apply over the specified temperature range, TA = –55°C to 125°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT Offset Voltage, RTI Initial vs power supply TA = 25°C ±100 ±800/G Over temperature ±150 ±2050/G TA = 25°C, VS = ±2.25 V to ±18 V ±1.6 ±175/G Over temperature ±1.8 ±175/G Long-term stability ±1 ±3/G 10 Impedance, differential Common mode voltage range (1) VO = V µV/mo || Ω || pF Ω || pF (V+) − (V+) − 1.4 (V−) + (V−) + 1.7 Safe input voltage Common-mode rejection µV/V 1011||9 10 Common mode µV V V ±40 VCM = ±13 V, ΔRS = kΩ G=1 75 Over temperature 67 G = 10 93 Over temperature 84 G = 100 113 Over temperature 98 G = 1000 113 Over temperature 98 V 86 106 dB 125 130 CURRENT ±2 Bias current Over temperature ±1 Offset Current ±8 ±16 Over temperature ±8 ±16 nA nA NOISE Noise voltage, RTI Noise current G = 1000, RS = Ω G = 1000, RS = Ω f = 10 Hz 10 f = 100 Hz f = kHz fB = 0.1 Hz to 10 Hz 0.2 f = 10 Hz 0.9 f = kHz 0.3 fB = 0.1 Hz to 10 Hz 30 nV/√Hz µVpp pA/√Hz pAPP GAIN 1+ (49.4 kΩ/RG) Gain equation Range of gain G=1 10000 ±0.05 Over temperature G = 10 Gain error ±0.02 (1) ±0.1 ±0.5 ±0.65 ±0.05 Over temperature G = 1000 V/V ±0.15 Over temperature G = 100 V/V % ±0.65 ±1.1 ±0.5 ±2 Input common-mode range varies with output voltage — see typical curves Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP SBOS508 – DECEMBER 2009 www.ti.com 查询"INA129-EP"供应商 ELECTRICAL CHARACTERISTICS (continued) At TA = 25°C, VS = ±15 V, RL = 10 kΩ (unless otherwise noted) Boldface limits apply over the specified temperature range, TA = –55°C to 125°C PARAMETER TEST CONDITIONS Gain vs temperature (2) 49.4-kΩ resistance (2) MIN TYP G=1 ppm/°C ±25 ±100 ppm/°C ±0.0001 ±0.0018 Over temperature ±0.0035 G = 10 Nonlinearity UNIT ±10 (3) VO = ±13.6 V, G=1 MAX ±1 ±0.0003 Over temperature ±0.0035 ±0.0055 G = 100 ±0.0005 Over temperature % of FSR ±0.0035 ±0.0055 G = 1000 ±0.001 See (4) OUTPUT Voltage Positive RL = 10 kΩ (V+) − 1.4 (V+) − 0.9 Negative RL = 10 kΩ (V−) + 1.4 (V−) + 0.8 Load capacitance stability Short-curcuit current V 1000 pF +6/−15 mA FREQUENCY RESPONSE Bandwidth, −3 dB Slew rate Settling time, 0.01% Overload recovery G=1 1300 G = 10 700 G = 100 200 G = 1000 20 VO = ±10 V, G = 10 G=1 G = 10 G = 100 G = 1000 80 50% overdrive kHz V/µs µs µs POWER SUPPLY Voltage range ±2.25 VIN = V Current, total ±15 ±18 ±700 ±750 Over temperature ±1200 V µA TEMPERATURE RANGE Specification −55 125 °C Operating −55 125 °C θJA (2) (3) (4) 8-pin DIP 80 SO-8 SOIC 150 °C/W Specified by wafer test Temperature coefficient of the 49.4-kΩ term in the gain equation Nonlinearity measurements in G = 1000 are dominated by noise Typical nonlinearity is ±0.001% Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP www.ti.com SBOS508 – DECEMBER 2009 查询"INA129-EP"供应商 TYPICAL CHARACTERISTICS At TA = 25°C, VS = ±15 V, unless otherwise noted GAIN vs FREQUENCY COMMON-MODE REJECTION vs FREQUENCY 140 60 G =1000V/V G =100V/V G = 1000V/V Common-Mode Rejection (dB) 50 40 Gain (dB) G = 100V/V 30 20 G = 10V/V 10 G = 1V/V − 10 − 20 120 G =10V/V 100 G =1V/V 80 60 40 20 1k 10k 100k 10M 1M 10 Frequency (Hz) 100 1k 10k 100k 1M Frequency (Hz) Figure Figure POSITIVE POWER SUPPLY REJECTION vs FREQUENCY NEGATIVE POWER SUPPLY REJECTION vs FREQUENCY 140 140 Power Supply Rejection (dB) Power Supply Rejection (dB) G = 1000V/V 120 G =1000V/V 100 G =100V/V 80 60 G= 10V/V 40 G=1V/V 20 10 100 1k 10k 100k 1M 120 G =100V/V 100 80 60 G=10V/V 40 G=1V/V 20 10 Frequency (Hz) Frequency (Hz) Figure Figure Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP SBOS508 – DECEMBER 2009 www.ti.com 查询"INA129-EP"供应商 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, VS = ±15 V, unless otherwise noted INPUT COMMON-MODE RANGE vs OUTPUT VOLTAGE (VS = ±15 V) INPUT COMMON-MODE RANGE vs OUTPUT VOLTAGE (VS = ±5 V, ±2.5 V) 15 G ≥ 10 G=1 G=1 +15V VD/2 VD/2 + VO Ref + VCM -15V 10 G=1 G=1 VS = ±5V VS = ±2.5V 15 -15 -10 -5 10 -5 15 -4 -3 -1 -2 Output Voltage (V) Output Voltage (V) Figure Figure INPUT-REFERRED NOISE vs FREQUENCY SETTLING TIME vs GAIN 1k ¾ Input Bias Current Noise (pA/√Hz) 100 10 G =10V/V 10 G =100, 1000V/V Current Noise 0.1 10 100 1k 10k 0.01% Settling Time (ms) G = 1V / V 100 100 ¾ Input-Referred Voltage Noise (nV/√Hz) G=1 G ≥ 10 0.1% 10 1 10 100 1000 Gain (V/V) Frequency (Hz) Figure G ≥ 10 G ≥ 10 10 Common-Mode Voltage (V) Common-Mode Voltage (V) G ≥ 10 Figure Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP www.ti.com SBOS508 – DECEMBER 2009 查询"INA129-EP"供应商 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, VS = ±15 V, unless otherwise noted QUIESCENT CURRENT AND SLEW RATE vs TEMPERATURE INPUT OVER-VOLTAGE V/I CHARACTERISTICS 0.85 0.8 5 Slew Rate 0.7 IQ 0.65 Input Current (mA) 0.75 Slew Rate (V/ms) Quiescent Current (mA) 2 -50 -25 25 50 75 100 G = 1V / V +15V G=1V/V VIN G = 1000V/V IIN 15V -75 G = 1000V/V 06 Flat region represents normal linear operation 125 -50 -40 -30 Temperature (°C) -20 -10 10 30 20 40 50 Input Voltage (V) Figure Figure 10 INPUT OFFSET VOLTAGE WARM-UP INPUT BIAS CURRENT vs TEMPERATURE 10 Input Bias Current (nA) Offset Voltage Change (mV) -2 -4 IOS IB Typical IB and IOS Range ±2nA at 25°C -6 -8 -10 100 200 300 400 500 -75 -50 Time (ms) -25 25 50 75 100 125 Temperature (°C) Figure 11 Figure 12 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP SBOS508 – DECEMBER 2009 www.ti.com 查询"INA129-EP"供应商 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, VS = ±15 V, unless otherwise noted OUTPUT VOLTAGE SWING vs POWER SUPPLY VOLTAGE (V+) (V+) (V+)-0.4 (V+)-0.4 Output Voltage Swing (V) Output Voltage (V) OUTPUT VOLTAGE SWING vs OUTPUT CURRENT (V+)-0.8 (V+)-1.2 (V-)+1.2 (V-)+0.8 +25°C (V+)-0.8 (V+)-1.2 -40 °C RL = 10 k Ω +25°C (V-)+1.2 -40 °C +85°C (V-)+0.8 (V-) (V-) 10 15 Figure 13 Figure 14 SHORT-CIRCUIT OUTPUT CURRENT vs TEMPERATURE MAXIMUM OUTPUT VOLTAGE vs FREQUENCY 30 16 Peak-to-Peak Output Voltage (VPP) 18 -I SC 14 12 10 +ISC 20 Power Supply Voltage (V) Output Current (mA) Short-Circuit Current (mA) +85°C -40 °C (V-)+0.4 (V-)+0.4 G =10, 100 25 G=1 G = 1000 20 15 10 0 -75 -50 -25 25 50 75 100 125 1k 10k 100k 1M Frequency (Hz) Temperature (°C) Figure 15 +85°C Figure 16 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP www.ti.com SBOS508 – DECEMBER 2009 查询"INA129-EP"供应商 TYPICAL CHARACTERISTICS (continued) At TA = 25°C, VS = ±15 V, unless otherwise noted TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY SMALL SIGNAL (G = 1, 10) TH D + N (% ) VO = V r m s 500kHz Measurement Bandwidth 0.1 G=1 RL = 10kW G=1 G =100, RL = 100kW 20mV/div 0.01 G =10V/V RL = 100kW G =1, RL = 100kW Dashed Portion is noise limited 0.001 100 10k 1k G = 10 100k 5ms/div Frequency (Hz) Figure 17 Figure 18 SMALL SIGNAL (G = 100, 1000) LARGE SIGNAL (G = 1, 10) G = 10 G=1 20mV/div 5V/div G = 10 0 G = 10 5ms/div 20ms/div Figure 19 Figure 20 LARGE SIGNAL (G = 100, 1000) VOLTAGE NOISE 0.1 Hz TO 10 Hz INPUT-REFERRED, G ≥ 100 G =100 5V/div 0.1mV/div G =1000 20ms/div 1s/div Figure 21 Figure 22 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP SBOS508 – DECEMBER 2009 www.ti.com 查询"INA129-EP"供应商 APPLICATION INFORMATION Figure 23 shows the basic connections required for operation of the INA129 Applications with noisy or high impedance power supplies may require decoupling capacitors close to the device pins as shown The output is referred to the output reference (Ref) terminal which is normally grounded This must be a low-impedance connection to assure good common-mode rejection A resistance of Ω in series with the Ref pin will cause a typical device to degrade to approximately 80 dB CMR (G = 1) Setting the Gain Gain is set by connecting a single external resistor, RG, between pins and 49.4 kW G=1+ ¾ RG (1) Commonly used gains and resistor values are shown in Figure 23 The 49.9-kΩ term in Equation comes from the sum of the two internal feedback resistors of A1 and A2 These on-chip metal film resistors are laser trimmed to accurate absolute values The accuracy and temperature coefficient of these internal resistors are included in the gain accuracy and drift specifications of the INA129 The stability and temperature drift of the external gain setting resistor, RG, also affects gain RG’s contribution to gain accuracy and drift can be directly inferred from Equation Low resistor values required for high gain can make wiring resistance important Sockets add to the wiring resistance which will contribute additional gain error (possibly an unstable gain error) in gains of approximately 100 or greater V+ 0.1mF G=1+ DESIRED GAIN (V/V) 10 20 50 100 200 500 1000 2000 5000 10000 49.4kW RG RG (W) NC 49.4K 12.35K 5489 2600 1008 499 248 99 49.5 24.7 9.88 4.94 VIN- NEAREST 1% RG (W) Over Voltage Protection A1 40kΩ NC 49.9K 12.4K 5.49K 2.61K 1K 499 249 100 49.9 24.9 9.76 4.87 40kΩ VO = G · (VIN+ - VIN-) 24.7kΩ A3 RG + + VIN 24.74kΩ Over Voltage Protection A2 40kΩ NC: No Connection 40kΩ Ref Load VO - 0.1mF V IN V- Also drawn in simplified form: VO RG + V IN Ref Figure 23 Basic Connections Dynamic Performance Figure shows that, despite its low quiescent current, the INA129 achieves wide bandwidth, even at high gain This is due to the current-feedback topology of the input stage circuitry Settling time also remains excellent at high gain 10 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP www.ti.com SBOS508 – DECEMBER 2009 查询"INA129-EP"供应商 Noise Performance The INA129 provides very low noise in most applications Low frequency noise is approximately 0.2 μVPP measured from 0.1 Hz to 10 Hz (G ≥ 100) This provides dramatically improved noise when compared to state-of-the-art chopper-stabilized amplifiers Offset Trimming The INA129 is laser trimmed for low offset voltage and offset voltage drift Most applications require no external offset adjustment Figure 24 shows an optional circuit for trimming the output offset voltage The voltage applied to Ref terminal is summed with the output The operational amplifier buffer provides low impedance at the Ref terminal to preserve good common-mode rejection VIN V+ RG + VIN INA129 VO 100mA 1/2 REF200 Ref OPA177 ±10mV Adjustment Range 10kW 100W 100W 100mA 1/2 REF200 V- Figure 24 Optional Trimming of Output Offset Voltage Input Bias Current Return Path The input impedance of the INA129 is extremely high (approximately 1010 Ω) However, a path must be provided for the input bias current of both inputs This input bias current is approximately ±2 nA High input impedance means that this input bias current changes very little with varying input voltage Input circuitry must provide a path for this input bias current for proper operation Figure 25 shows various provisions for an input bias current path Without a bias current path, the inputs will float to a potential which exceeds the common-mode range, and the input amplifiers will saturate If the differential source resistance is low, the bias current return path can be connected to one input (see the thermocouple example in Figure 25) With higher source impedance, using two equal resistors provides a balanced input with possible advantages of lower input offset voltage due to bias current and better high-frequency common-mode rejection Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP 11 INA129-EP SBOS508 – DECEMBER 2009 www.ti.com 查询"INA129-EP"供应商 Microphone, Hydrophone etc INA129 47kW 47kW Thermocouple INA129 10kW INA129 Center-tap provides bias current return Figure 25 Providing an Input Common-Mode Current Path Input Common-Mode Range The linear input voltage range of the input circuitry of the INA129 is from approximately 1.4 V below the positive supply voltage to 1.7 V above the negative supply As a differential input voltage causes the output voltage increase, however, the linear input range will be limited by the output voltage swing of amplifiers A1 and A2 So the linear common-mode input range is related to the output voltage of the complete amplifier This behavior also depends on supply voltage (see Figure and Figure 6) Input-overload can produce an output voltage that appears normal For example, if an input overload condition drives both input amplifiers to their positive output swing limit, the difference voltage measured by the output amplifier will be near zero The output of A3 will be near V even though both inputs are overloaded Low Voltage Operation The INA129 can be operated on power supplies as low as ±2.25 V Performance remains excellent with power supplies ranging from ±2.25 V to ±18 V Most parameters vary only slightly throughout this supply voltage range Operation at very low supply voltage requires careful attention to assure that the input voltages remain within their linear range Voltage swing requirements of internal nodes limit the input common-mode range with low power supply voltage Figure and Figure show the range of linear operation for ±15 V, ±5 V, and ±2.5 V supplies 12 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP www.ti.com SBOS508 – DECEMBER 2009 查询"INA129-EP"供应商 +5V 2.5V - ∆V RG 300W VO INA129 Ref 2.5V + ∆V Figure 26 Bridge Amplifier VIN + VO RG INA129 Ref C1 0.1mF OPA130 R1 1MW f-3dB = 2pR1C1 = 1.59 Hz Figure 27 AC-Coupled Instrumentation Amplifier Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP 13 INA129-EP SBOS508 – DECEMBER 2009 www.ti.com 查询"INA129-EP"供应商 V+ 10.0V REF102 R1 R2 Pt100 Cu K VO Cu RG INA129 Ref R3 100Ω = Pt100 at 0°C ISA TYPE MATERIAL +Chromel -Constantan +Iron -Constantan +Chromel -Alumel +Copper -Constantan E J K T SEEBECK COEFFICIENT (mV/°C) R1, R2 58.5 66.5kW 50.2 76.8kW 39.4 97.6kW 38 102kW Figure 28 Thermocouple Amplifier With RTD Cold-Junction Compensation VIN IO = R1 RG INA129 V IN ·G R1 + Ref IB A1 A1 IB ERROR OPA177 ± 1.5 nA OPA131 ± 50 pA OPA602 ± pA OPA128 ± 75 fA IO Load Figure 29 Differential Voltage to Current Converter 14 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP INA129-EP www.ti.com SBOS508 – DECEMBER 2009 查询"INA129-EP"供应商 RG = 5.6kW 2.8kW G = 10 LA RA RG/2 INA129 VO Ref 2.8kW 390kW 1/2 OPA2131 RL 390kW VG 10kW VG 1/2 OPA2131 NOTE: Due to the INA129’s current-feedback topology, VG is approximately 0.7 V less than the common-mode input voltage This DC offset in this guard potential is satisfactory for many guarding applications Figure 30 ECG Amplifier With Right-Leg Drive Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA129-EP 15 查询"INA129-EP"供应商 PACKAG www.ti.com PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Pea INA129MDREP ACTIVE SOIC D 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C V62/10605-01XE ACTIVE SOIC D 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect NRND: Not recommended for new designs Device is in production to support existing customers, but TI does not recommend using this part in a new PREVIEW: Device has been announced but is not in production Samples may or may not be available OBSOLETE: TI has discontinued the production of the device (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.t information and additional product content details TBD: The Pb-Free/Green conversion plan has not been defined Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all lead not exceed 0.1% by weight in homogeneous materials Where designed to be soldered at high temperatures, TI Pb-Free products are suitable fo Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, the die and leadframe The component is otherwise considered Pb-Free (RoHS compatible) as defined above Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retard in homogeneous material) (3) MSL, Peak Temp The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided TI provided by third parties, and makes no representation or warranty as to the accuracy of such information Efforts are underway to better integrate inf continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical an TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for releas In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Cu OTHER QUALIFIED VERSIONS OF INA129-EP : • Catalog: INA129 NOTE: Qualified Version Definitions: Addendum-Page 查询"INA129-EP"供应商 PACKAG www.ti.com • Catalog - TI's standard catalog product Addendum-Page 查询"INA129-EP"供应商 查询"INA129-EP"供应商 查询"INA129-EP"供应商 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard 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Link(s): INA1 29 -EP INA1 29 -EP www.ti.com SBOS508 – DECEMBER 2009 查询 "INA1 29 -EP" 供应商 +5V 2.5V - ∆V RG 300W VO INA1 29 Ref 2.5V + ∆V Figure 26 Bridge Amplifier VIN + VO RG INA1 29 Ref C1 0.1mF OPA130 R1 1MW 1 f-3dB = 2pR1C1 = 1.59 Hz Figure 27 AC-Coupled Instrumentation Amplifier Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA1 29 -EP 13 INA1 29 -EP SBOS508... price of the TI part(s) at issue in this document sold by TI to Cu OTHER QUALIFIED VERSIONS OF INA1 29 -EP : • Catalog: INA1 29 NOTE: Qualified Version Definitions: Addendum-Page 1 查询 "INA1 29 -EP" 供应商 PACKAG www.ti.com • Catalog - TI's standard catalog product Addendum-Page 2 查询 "INA1 29 -EP" 供应商 查询 "INA1 29 -EP" 供应商 查询 "INA1 29 -EP" 供应商 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the... Incorporated Product Folder Link(s): INA1 29 -EP 11 INA1 29 -EP SBOS508 – DECEMBER 2009 www.ti.com 查询 "INA1 29 -EP" 供应商 Microphone, Hydrophone etc INA1 29 47kW 47kW Thermocouple INA1 29 10kW INA1 29 Center-tap provides bias current return Figure 25 Providing an Input Common-Mode Current Path Input Common-Mode Range The linear input voltage range of the input circuitry of the INA1 29 is from approximately 1.4 V below... Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA1 29 -EP INA1 29 -EP www.ti.com SBOS508 – DECEMBER 2009 查询 "INA1 29 -EP" 供应商 RG = 5.6kW 2.8kW G = 10 LA RA RG/2 INA1 29 VO Ref 2.8kW 390kW 1/2 OPA2131 RL 390kW VG 10kW VG 1/2 OPA2131 NOTE: Due to the INA1 29’s current-feedback topology, VG is approximately 0.7 V less than the common-mode input voltage This... Drive Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): INA1 29 -EP 15 查询 "INA1 29 -EP" 供应商 PACKAG www.ti.com PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Pea INA1 29MDREP ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C V62/10605-01XE ACTIVE SOIC D 8 2500.. .INA1 29 -EP www.ti.com SBOS508 – DECEMBER 2009 查询 "INA1 29 -EP" 供应商 Noise Performance The INA1 29 provides very low noise in most applications Low frequency noise is approximately 0.2 μVPP measured from 0.1 Hz to 10 Hz (G ≥ 100) This provides dramatically improved noise when compared to state-of-the-art chopper-stabilized amplifiers Offset Trimming The INA1 29 is laser trimmed for... 2009 www.ti.com 查询 "INA1 29 -EP" 供应商 V+ 10.0V 6 REF102 R1 2 R2 4 Pt100 Cu K VO Cu RG INA1 29 Ref R3 100Ω = Pt100 at 0°C ISA TYPE MATERIAL +Chromel -Constantan +Iron -Constantan +Chromel -Alumel +Copper -Constantan E J K T SEEBECK COEFFICIENT (mV/°C) R1, R2 58.5 66.5kW 50.2 76.8kW 39.4 97.6kW 38 102kW Figure 28 Thermocouple Amplifier With RTD Cold-Junction Compensation VIN IO = R1 RG INA1 29 V IN ·G R1 +... Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided TI provided by third parties, and makes no representation or warranty as to the accuracy of such information Efforts are underway to better integrate inf continues to take reasonable steps to provide representative and accurate information but may not have conducted... applied to Ref terminal is summed with the output The operational amplifier buffer provides low impedance at the Ref terminal to preserve good common-mode rejection VIN V+ RG + VIN INA1 29 VO 100mA 1/2 REF200 Ref OPA177 ±10mV Adjustment Range 10kW 100W 100W 100mA 1/2 REF200 V- Figure 24 Optional Trimming of Output Offset Voltage Input Bias Current Return Path The input impedance of the INA1 29 is extremely... from TI under the patents or other intellectual property of TI Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices Reproduction of this information with alteration is an unfair and deceptive business practice TI is not responsible or liable for such